Earth experiences constant volcanic activity - here’s Indonesia’s Mount Anak Krakatau (Child of Krakatoa) photographed in July 2018.
Compared to Earth, more "oomph" is required to bring magma to the surface of Mars, and this is probably why we haven't seen any recent eruptions on the red planet.
Some explosive volcanoes can send ash high up into the sky and it can travel around the world over different countries.
When magma rises towards the surface gas bubbles start to form. Whether or not they can escape as the magma is rising affects how explosive the eruption will be.
The ‘fissure 8’ cone.
US Geological Survey
A mysterious cone has developed due to unusual volcanic activity on Hawaii.
Lifeguards and volunteers run across an ash covered slope after the June 3 eruption of the Fuego volcano in Guatemala.
Important points about volcanoes: location matters, explosiveness can be predicted to an extent, and fast-moving flows of volcanic materials (known as pyroclastic flows) are deadly.
A massive fast moving lava flow from Kilauea consumes everything in its path, as the flames from the remnants of one home burns on the left, while it approaches another on the right.
EPA/Bruce Omori/Paradise Helicopters
The current eruption of Kilauea on Hawai'is big island can tell us a lot about what is going on beneath the volcano and may provide lessons for future eruptions.
An ash plume rises from the Kilauea volcano on Hawaii’s Big Island.
AAP Image/CrowdSpark/Jillian Marohnic Volcano Hideaways
The Kīlauea volcano on Hawai'i's big island is threatening to produce violent and energetic eruptions not seen since 1924.
Although it is very hot, when lava flows over the ground, it generally does not melt the soil or rock.
Marcella Cheng/The Conversation
The short answer is that while lava is hot, it's not hot enough to melt the rocks that make up the side of the volcano.
Mayon Volcano erupts in Legaspi city, Philippines on 25 January 2018.
Francis R. Malasig/AAP
It feels as if volcanoes in our region are going off at a high rate right now - but it's reasonably normal activity for the "Ring of Fire" belt running around the Asia Pacific.
A new study has found a way to predict eruptions at Mount Etna within two weeks.
Children observe the eruption of Mount Agung on Bali, November 29, 2017.
Muhammad Fauzy Chaniago/AAP
'Volcano forensics' involves a mixture of modern day monitoring and analysis of past eruptions. Geologists use volcanic rocks as a kind of time capsule to assess what happened previously.
Where there’s smoke, there will be lava?
U.S. Geological Survey via AP
How do scientists predict volcanic eruptions? To do so with accuracy, they need to know the individual volcano and its history very well.
Volcanologists often visit active volcanoes in order to observe eruptions and collect samples of lava and ash.
Volcanologists study the formation and eruptions of volcanoes - surely one of the most interesting jobs around. However, it can also be very dangerous.
Harvepino / shutterstock
More than 100 volcanoes lie beneath the continent's ice sheet.
Mount Etna: boiling over … again.
The clock is ticking.
The incredible Blue Lake at Mount Gambier fills one of the craters from the last volcanic eruption just 5,000 years ago.
ian woolcock from www.shutterstock.com
What can we expect Australia's next volcanic eruption to be like? That depends where and when it happens, and it could be sooner than you think.
Scientists have found a way to narrow down the best signs that a specific volcano is about to blow.
US Geological Survey
Thirty five years after the devastating eruption of Mount St Helens, a volcanologist looks back on how it unfolded – and how it forever changed our understanding of how volcanoes work.
Spotting ancient volcanoes of Britain.
University of Bristol
A British volcanologist has won one of the most prestigious awards in science – the Vetlesen Prize, which is considered to be the earth sciences equivalent of the Nobel Prize. Stephen Sparks of the University…
Phreatic eruption: Mount Ontake.
EPA/Ministry of Land, Infrastructure
Mount Ontake, Japan’s second-highest volcano, erupted killing at least 31 people on September 27. Since then, there has been feverish speculation about why tourists were on an active volcano and why the…
The impressive scar-like rifts of the aptly-named Afar region.
In September 2014, the Natural Environment Research Council will launch a major five-year programme to study the volcanoes of Ethiopia’s Great Rift Valley. The project team contains core investigators…